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Process Control and Instrumentation

Process Control and Instrumentation
Pressure of 0.01 psi (absolute) can be measured by __________ gauge.

Mcloid
Pirani
Ionisation
None of these

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Process Control and Instrumentation
In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is

G/H
H/G
G/(1 + H)
H(1 + G)

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Process Control and Instrumentation
Load cells are used for the measurement of

Stress
Weight
Strain
Velocity

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Seebeck effect
Stafan-Boltzman law
Wien's law
Kirchoffs law

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Process Control and Instrumentation
Volumetric expansion is the working principle of the __________ thermometers.

Mercury in glass
Bimetallic
Constant volume gas
Vapor pressure

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Process Control and Instrumentation
The transfer function of a process is 1/(16s² + 8s + 4). If a step change is introduced into the system, then the response will be

Over damped
Critically damped
None of these
Under damped

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